Eigenvalues associated with a closed geodesic

scientific article published in 1976

Lagrangian Submanifolds and Hamiltonian Systems

artículo científico publicado en 1973

Lie-Poisson structure on some Poisson Lie groups

artículo científico publicado en 1992

Nonlinear stability of fluid and plasma equilibria

Nonspreading Wave Packets for the Cubic Schrödinger Equation with a Bounded Potential

artículo científico publicado en 1986

On the hypotheses of Rabinowitz' periodic orbit theorems

Reduction of symplectic manifolds with symmetry

Symplectic geometry

Symplectic manifolds and their lagrangian submanifolds

The Cut Locus and Conjugate Locus of a Riemannian Manifold

artículo científico publicado en 1968